Exciting Opening of 'Secret Base Project Sky' in Hokuto City, Yamanashi The 'Secret Base Project Sky' opens on September 13, 2025, in Hokuto City, Yamanashi, offering a unique retreat experience among nature.

Exciting Opening of 'Secret Base Project Sky' in Hokuto City, Yamanashi #Japan #Yamanashi #Hokuto_City #Secret_Base_Project